Thursday, 17 October 2013

EGG DROP - NEWTON’S LAW OF INERTIA

The Egg Drop is a classic science demonstration that illustrates Newton's Laws of Motion, namely inertia. The challenge sounds so simple... just get the egg into the glass of water, but there are a few obstacles. The egg is perched high above the water on a cardboard tube, and a pie plate sits between the tube and the water. Still think it's easy? Sir Isaac Newton does. 
 

http://www.stevespanglerscience.com/lab/experiments/egg-drop-inertia-trick


Tuesday, 15 October 2013

Can We Beat The Pull of Gravity?






Room 17 are going to be learning about force, air and gravity for our science unit this term. Gravity keeps us, and everything else that weighs something on earth. Kharn asked the question, “When we put our arms in the air, why doesn't gravity pull them down?” Mrs Roil got us all to put our arms in the air. Slowly people put their arms down because they were getting too sore. The rest of us were having a battle with gravity! After about 10 minutes it was just Kory, Phoenix, Madison and I left. Then Kory dropped out. Phoenix, Maddy and I were all very competitive and no one would admit defeat! Eventually we were so tired, our arms had been in the air for 45 minutes!  We were about to quit, but then Mrs Roil told us it could be a tie. We were all relieved, that just goes to show you can’t mess with gravity!

Flexibility Testers




We are learning about making a change in PE at the moment.  We designed a flexibility measure and Yesterday we measured the flexibility of out hamstring muscles and lower backs.  We will work on specific exercises to increase the flexibility of these muscles and measure again at the end of the week to see if we have made a change.

Monday, 14 October 2013

Skateboard Art - I wonder what yours will look like?

What is Air?

What an amazing discussion we had after doing this experiment.  We put together an extensive list of vocabulary that we can all use when describing our hypotheses.  We also came up with a lot of questions that we are going to investigate over the next few days.  

Establishing that air exists and identifying some of its properties.
 1. Pack a crushed paper towel into a jam jar and then immerse the jar, upside down, in a large container of water until the whole jar is submerged.
 2. Remove the jar, without tipping it, and observe the state of the paper. The paper will remain dry. Suggest an explanation for your observations.
 3. Repeat the process, using a plastic cup. Will it make any difference if you use a plastic cup or a glass jar? 

Predict what you think will happen if you put a small hole in the base of the plastic cup. Think about what you will observe and and what will happen when you take the cup out of the water. What will happen: What actually happened: After the experiment: Can you explain what air is?